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Effect of grey component replacement processing and varnishing on the light fastness of colours on cardboard prints / Tomislav Cigula in COLORATION TECHNOLOGY, Vol. 139, N° 1 (02/2023)
[article]
Titre : Effect of grey component replacement processing and varnishing on the light fastness of colours on cardboard prints Type de document : texte imprimé Auteurs : Tomislav Cigula, Auteur ; Tamara Tomasegovic, Auteur ; Davor Donevski, Auteur ; Tomislav Hudika, Auteur Année de publication : 2023 Article en page(s) : p. 16-27 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Emballages
Fourier, Spectroscopie infrarouge à transformée de
Impression en couleur
Mesure
Papier et carton couché
Photostabilité
Réflexion totale atténuée
Résistance à l'abrasion
Solidité de la couleur
Vernis en phase aqueuseIndex. décimale : 535.6 Couleur Résumé : The visual appearance of packaging is one of its most important features. Electromagnetic irradiation causes a change in colour and often leads to colour fading (ie, to diminished visual appearance of a printed product). This research study aimed to determine the combined effect of grey component replacement image processing and varnishing on the protection of prints' appearance when exposed to accelerated ageing. For that purpose, two test charts were printed in a lithographic press and coated with water-based and ultraviolet-curable varnish before exposing them to xenon light. The prepared prints were evaluated by determining the tone values and colour difference, as well as the rub and abrasion resistance. In addition, Fourier Transform–infrared-attenuated total reflectance spectra were recorded to detect possible chemical changes caused by the (AcA). The results showed that the investigated period of (AcA) caused significant differences in the tone values of yellow, while the other primary colours proved to be more resistant. The water-based varnish provided better protection than the ultraviolet-curable varnish. The grey component replacement image processing diminished the colour difference caused by (AcA) on all the prepared print samples, and was particularly detected in tertiary colours containing the mid-range tone values of yellow (34%-68%). Both varnishes improved the rub resistance of aged prints, but only ultraviolet-curable varnish improved the abrasion resistance of both the unaged and the aged prints. In conclusion, applying varnish to prints ensured enhanced rub and abrasion resistance and diminished the colour change caused by (AcA). Finally, improved resistance to colour change was achieved by processing images with the grey component replacement method. Note de contenu : - EXPERIMENTAL : Materials and preparation of samples - Methods of measurement and analysis
- RESULTS AND DISCUSSION : TVs of process colours and colour difference of tertiary colours - Rub and abrasion resistance of the prints - FTIR-ATR spectroscopyDOI : https://doi.org/10.1111/cote.12630 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12630 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39202
in COLORATION TECHNOLOGY > Vol. 139, N° 1 (02/2023) . - p. 16-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24084 - Périodique Bibliothèque principale Documentaires Disponible Effect of nano polytetrafluoroethylene on epoxy melamine coating / S. S. Ramteke in SURFACE COATINGS INTERNATIONAL, Vol. 95, 3 (05/2012)
[article]
Titre : Effect of nano polytetrafluoroethylene on epoxy melamine coating Type de document : texte imprimé Auteurs : S. S. Ramteke, Auteur ; P. A. Wasekar, Auteur ; A. C. Rao, Auteur ; Shashank T. Mhaske, Auteur Année de publication : 2012 Article en page(s) : p. 134-137 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Ammoniac
Epoxydes
Fourier, Spectroscopie infrarouge à transformée de
Granulométrie
Lumière -- Diffusion
MélamineLa mélamine, de nom chimique 1,3,5-triazine-2,4,6-triamine, est parfois dénommée cyanuramide ou cyanurotriamine. Sa formule brute est C3H6N6.
Les "résines mélamine-formaldéhyde" ou "mélamine-formol" (sigle MF) sont appelées "mélamine" dans le langage courant. Elles font partie de la famille des aminoplastes qui regroupe des résines thermodurcissables aminées, issues d'un comonomère tel l'urée ou la mélamine, parfois le thiocarbamide, le cyanamide hydrogène ou le dicyandiamide ; le second comonomère étant le formaldéhyde.
Nanoparticules
Polytétrafluoréthylène
Poudres
Résistance à l'abrasion
Résistance chimique
Revêtements
SodiumLe sodium est un élément chimique, de symbole Na et de numéro atomique 11. C'est un métal mou et argenté, qui appartient aux métaux alcalins. On ne le trouve pas à l'état de corps pur dans la nature, mais il est très abondant sous forme de composés, par exemple dans le sel. Il brûle avec une flamme jaune.
Le sodium possède 22 isotopes connus, avec un nombre de masse variant entre 18 et 37.Index. décimale : 667.9 Revêtements et enduits Résumé : Nano-materials attract well-defined attention in today's scientific world. Nano poly(tetrafluoroethylene) (PTFE was prepared by a forced impact method from PTFE powder. The PTFE was characterised by dynamic light scattering, particle-size analysis. To improve the surface interactivity and dispersibility of nano-PTFE, it was treated with sodium metal in liquid ammonia. The PTFE material was incorporated in a coating formulation and coating composite characterised by Fourier transform infrared spectroscopy (FTIR). In this work, the PTFE was incorporated into the coating at various loadings and its effect on vairous properties was studied. It was observed that the scratch resistance and chemical resistance were increased whilst the critical surface tension and the coefficient of friction were decreased. Note de contenu : - EXPERIMENTAL : Material - Preparation of nano-PTFE and its treatment - Resin and coating preparation - Characterisation
- RESULTS AND DISCUSSION : FTIR characterisation - Performance properties - Surface tension characteristics - Coefficient of friction studiesEn ligne : https://drive.google.com/file/d/1uSPKSamZWIL7wRiTJ8RODkmDe6O8sQr6/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14930
in SURFACE COATINGS INTERNATIONAL > Vol. 95, 3 (05/2012) . - p. 134-137[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13907 - Périodique Bibliothèque principale Documentaires Disponible Effect of nanosilica and Zno nanoparticles / Anabel Crespo Soler in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4608 (05/2015)
[article]
Titre : Effect of nanosilica and Zno nanoparticles Type de document : texte imprimé Auteurs : Anabel Crespo Soler, Auteur ; N. Lardies Miaza, Auteur Année de publication : 2015 Article en page(s) : p. 14-16 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Charges (matériaux)
Formulation (Génie chimique)
Nanoparticules
Oxyde de zinc
Polyuréthanes
Résistance à l'abrasion
Résistance au rayonnement ultraviolet
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements en phase aqueuse:Peinture en phase aqueuse
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.Index. décimale : 667.9 Revêtements et enduits Résumé : In this paper, commercial nano zinc oxide (nano-ZnO) and nanosilica (nano-SiO2) were employed as fillers to improve the properties of abrasion and UV resistance of waterborne polyurethane coatings. Various dispersion techniques were studied to prevent the aggregation of primary nanoparticles in the polyol mixture. The nanoparticles dispersion was studied by OM and SEM. Polyols containing nanoparticles were mixed with the suitable amount of isocyanate to obtain polyurethane water-based coatings.
The resultant polyurethane nanocomposite was characterised according to abrasion resistance (ASTM D 4060) and QUV resistance (ASTM D 4587). Abrasion resistance was improved by adding different percentages of nanosilica nanoparticles but no improvement was obtained regarding UV resistance. Nano-zinc oxide nanoparticles contribution enhanced neither abrasion nor UV resistance, maybe due to catalytic reaction of nano-ZnO over PUR mains.Note de contenu : - EXPERIMENTAL : Materials - Mixing systems
- CHARACTERISATION TECHNIQUES : Optical microscope - Scanning electron microscope (SEM) - Abrasion resistance - QUV ageing and colour measurement - Experimental - Preparation of nanocomposites PUR coatings
- RESULTS AND DISCUSSIONS : Dispersion methods - Scanning electron microscope (SEM) - Abrasion resistance - QUV and colour measurementEn ligne : https://drive.google.com/file/d/1VOD-7gC_gX5VxH1oHG2iE2Q1AvhK2Sey/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24041
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 205, N° 4608 (05/2015) . - p. 14-16[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17211 - Périodique Bibliothèque principale Documentaires Disponible Effect of pigment colour on the printing performance of synthetic leather using a ultraviolet-curable water-borne polyurethane acrylate binder / Gülçin Baysal in COLORATION TECHNOLOGY, Vol. 135, N° 4 (08/2019)
[article]
Titre : Effect of pigment colour on the printing performance of synthetic leather using a ultraviolet-curable water-borne polyurethane acrylate binder Type de document : texte imprimé Auteurs : Gülçin Baysal, Auteur ; Berdan Kalav, Auteur ; Burcak Karaguzel Kayaoglu, Auteur Année de publication : 2019 Article en page(s) : p. 283-291 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Brillance (optique) -- Mesure
Colorimétrie
Copolymère uréthane acrylate
Cuir synthétique imprimé
Encre en phase aqueuse
Essai de dureté
Impression jet d'encre
Liants en phase aqueuse
Photoamorceurs (chimie)
Résistance à l'abrasion
Résistance au chocsIndex. décimale : 667.2 Colorants et pigments Résumé : The effect of pigment colours, cyan (C), magenta (M) and yellow (Y), and a blend of these (CMY blend) on the printing performance of synthetic leather using a ultraviolet (UV)-curable water-borne polyurethane acrylate binder and two types of photoinitiators was investigated. The curing process was carried out at different radiation doses using gallium and mercury UV lamps in combination. The performance of the prints was evaluated with abrasion resistance, crock fastness, gloss and hardness values and K/S. Chemical changes in the cured film structures due to UV curing were analysed by Fourier Transform–infrared spectroscopy measurements. The highest hardness values for clear and pigmented cured films were obtained with a gallium and mercury lamp combination at the highest energy density (1529 mJ/cm2). The highest K/S was obtained for the sample printed with the formulation including the C pigment and cured under a gallium and mercury lamp combination at low energy density (398 mJ/cm2). The M‐pigmented film displayed the highest hardness and abrasion resistance, whereas lower values were obtained with films pigmented with Y and C, and CMY blend, successively. The highest dry and wet crock values were obtained with the formulation including the M pigment. CMY-pigmented film showed the highest gloss values at all energy densities. The pigment colour affected the curing degree of printed films due to the different absorption/transmission intervals of each colour in the UV spectrum. Note de contenu : - EXPERIMENTAL : Materials - Methods
- RESULTS AND DISCUSSION : UV curing and pendulum hardness measurements - FTIR - Colour measurements - Gloss measurements - Crock fastness - Abrasion resistanceDOI : 10.1111/cote.12402 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12402 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32831
in COLORATION TECHNOLOGY > Vol. 135, N° 4 (08/2019) . - p. 283-291[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21090 - Périodique Bibliothèque principale Documentaires Disponible Effect of polysiloxane additives on the scratch resistance of an acrylic melamine automotive clearcoat / Bahram Ramezanzadeh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 2 (03/2012)
[article]
Titre : Effect of polysiloxane additives on the scratch resistance of an acrylic melamine automotive clearcoat Type de document : texte imprimé Auteurs : Bahram Ramezanzadeh, Auteur ; Siamak Moradian, Auteur ; Alireza Khosravi, Auteur ; N. Tahmassebi, Auteur Année de publication : 2012 Article en page(s) : p. 203-214 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Automobiles -- Vernis
Dureté (matériaux)
Microscopie
Microscopie électronique
Résistance à l'abrasion
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).
Vernis -- Additifs
ViscoélasticitéIndex. décimale : 667.9 Revêtements et enduits Résumé : Many attempts have been carried out to increase the scratch resistance of clearcoats using various appropriate additives. These additives may increase surface hardness or surface slippage, and/or enhance the bulk mechanical strength of the clearcoat. In the present study, the influence of various added loads of three differently structured polysiloxane additives on the scratch resistances of an acrylic melamine clearcoat was investigated. A series of analytical instruments, such as a laboratory carwash simulator, a scanning electron microscope, an optical microscope and an attenuated total reflectance Fourier transform infrared spectroscope, and others were used to compare the effects of the various added contents of polysiloxane additives on changes in the viscoelastic properties and scratch morphologies of the resultant clearcoats. The results illustrated that all polysiloxane additives improve the scratch resistance of such clearcoats, yet the optimum load varied for each individual additive. There is also a good indication that polyether-modified polysiloxanes improve scratch resistance by increasing surface hardness, while the fluorocarbon-modified polysiloxane tends to change the viscoelastic properties of the clearcoats. It was also found that scratch resistance varied linearly with Micro-Vickers’ hardness for brittle clearcoats. Note de contenu : - EXPERIMENT : Investigated paint system - Scratch test
- MECHANICAL PROPERTIES : Microindentation - Tensile test
- SURFACE ANALYSES : ATR-FTIR spectroscopy - Surface roughnessDOI : 10.1007/s11998-010-9239-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-010-9239-4.pdf?pdf=button Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14373
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Code-barres Cote Support Localisation Section Disponibilité 14096 - Périodique Bibliothèque principale Documentaires Disponible Effect of silica based sols on the optical properties and colour fastness of synthetic indigo dyed denim fabrics / Sabiha Sezgin Bozok in COLORATION TECHNOLOGY, Vol. 137, N° 3 (06/2021)
PermalinkEffects of ozone treatment on denim garment properties / Abir Ben Fraj in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)
PermalinkElectrospun core-shell nanofibers potential for wound dressing / Cheng Feng in CHEMICAL FIBERS INTERNATIONAL, Vol. 64, N° 1 (03/2014)
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PermalinkEngage : une nouvelle famille d'élastomères / J. Penfold in CAOUTCHOUCS & PLASTIQUES, N° 775 (03/1999)
PermalinkEnvironmentally-friendly polyurethane coatings for automotive OEM and plastic coating applications / Hiroshi Morita in SURFACE COATINGS INTERNATIONAL, Vol. 93, 3 (05/2010)
PermalinkEssais des papiers et cartons. Détermination de la résistance à l'abrasion du papier et du carton (selon la méthode TABER) - Norme NF Q 03-055 / Association Française de Normalisation (Paris) / Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) (1974)
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